[+REP] AppInventor help needed!

[Chaos]

So I have a test coming up in 2-3 days depending how you look at it.

The whole thing is about AppInventor (2.0), problem is I don't understand it at all.
Due to personal problems I've only attended 2 to 4 classes now, two of those were spent on cleaning the computer so I could /open/ the thing.

+REP for the person who can help me understand AppInventor.

[Chaos]

I guess I could pay someone to help me understand it, tomorrow is my test and I'm no closer to understanding this stuff.